If you request a smaller deposit limit, this will be immediately applied to your account. For example, if your daily limit is £50 and you make a request to reduce it to £10, your new deposit limit will be available straight away.
If you request a larger deposit limit, this will take 24 hours to be applied to your account. For example, if your daily limit is £10 and you make a request to increase it to £50, your new deposit limit will be available in 24 hours.